<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			section{
				display: flex;
				background-color: red;
				width: 66%;
				height: 200px;
				margin: 0 auto;
			}
			div:nth-child(1){
				width: 150px;
				background-color: green;
			}
			div:nth-child(2){
				flex: 2;
				background: blue;
			}
			div:nth-child(3){
				flex: 1;
				background-color: blueviolet;
			}			
			div:nth-child(4){
				width: 150px;
				background-color: green;
			}
		</style>
	</head>
	<body>
		<section>
			<div></div>
			<div></div>
			<div></div>
			<div></div>
		</section>
	</body>
</html>
